Chapter 4. heat

The following chapter contains information about the configuration options in the heat service.

4.1. heat.conf

This section contains options for the /etc/heat/heat.conf file.

4.1.1. DEFAULT

The following table outlines the options available under the [DEFAULT] group in the /etc/heat/heat.conf file.

.

Configuration option = Default valueTypeDescription

action_retry_limit = 5

integer value

Number of times to retry to bring a resource to a non-error state. Set to 0 to disable retries.

allow_trusts_redelegation = False

boolean value

Create trusts with redelegation enabled. This option is only used when reauthentication_auth_method is set to "trusts". Note that enabling this option does have security implications as all trusts created by Heat will use both impersonation and redelegation enabled. Enable it only when there are other services that need to create trusts from tokens Heat uses to access them, examples are Aodh and Heat in another region when configured to use trusts too.

auth_encryption_key = notgood but just long enough i t

string value

Key used to encrypt authentication info in the database. Length of this key must be 32 characters.

backdoor_port = None

string value

Enable eventlet backdoor. Acceptable values are 0, <port>, and <start>:<end>, where 0 results in listening on a random tcp port number; <port> results in listening on the specified port number (and not enabling backdoor if that port is in use); and <start>:<end> results in listening on the smallest unused port number within the specified range of port numbers. The chosen port is displayed in the service’s log file.

backdoor_socket = None

string value

Enable eventlet backdoor, using the provided path as a unix socket that can receive connections. This option is mutually exclusive with backdoor_port in that only one should be provided. If both are provided then the existence of this option overrides the usage of that option. Inside the path {pid} will be replaced with the PID of the current process.

client_retry_limit = 2

integer value

Number of times to retry when a client encounters an expected intermittent error. Set to 0 to disable retries.

cloud_backend = heat.engine.clients.OpenStackClients

string value

Fully qualified class name to use as a client backend.

conn_pool_min_size = 2

integer value

The pool size limit for connections expiration policy

conn_pool_ttl = 1200

integer value

The time-to-live in sec of idle connections in the pool

control_exchange = openstack

string value

The default exchange under which topics are scoped. May be overridden by an exchange name specified in the transport_url option.

convergence_engine = True

boolean value

Enables engine with convergence architecture. All stacks with this option will be created using convergence engine.

debug = False

boolean value

If set to true, the logging level will be set to DEBUG instead of the default INFO level.

default_deployment_signal_transport = CFN_SIGNAL

string value

Template default for how the server should signal to heat with the deployment output values. CFN_SIGNAL will allow an HTTP POST to a CFN keypair signed URL (requires enabled heat-api-cfn). TEMP_URL_SIGNAL will create a Swift TempURL to be signaled via HTTP PUT (requires object-store endpoint which supports TempURL). HEAT_SIGNAL will allow calls to the Heat API resource-signal using the provided keystone credentials. ZAQAR_SIGNAL will create a dedicated zaqar queue to be signaled using the provided keystone credentials.

default_log_levels = ['amqp=WARN', 'amqplib=WARN', 'boto=WARN', 'qpid=WARN', 'sqlalchemy=WARN', 'suds=INFO', 'oslo.messaging=INFO', 'oslo_messaging=INFO', 'iso8601=WARN', 'requests.packages.urllib3.connectionpool=WARN', 'urllib3.connectionpool=WARN', 'websocket=WARN', 'requests.packages.urllib3.util.retry=WARN', 'urllib3.util.retry=WARN', 'keystonemiddleware=WARN', 'routes.middleware=WARN', 'stevedore=WARN', 'taskflow=WARN', 'keystoneauth=WARN', 'oslo.cache=INFO', 'oslo_policy=INFO', 'dogpile.core.dogpile=INFO']

list value

List of package logging levels in logger=LEVEL pairs. This option is ignored if log_config_append is set.

default_notification_level = INFO

string value

Default notification level for outgoing notifications.

default_publisher_id = None

string value

Default publisher_id for outgoing notifications.

default_software_config_transport = POLL_SERVER_CFN

string value

Template default for how the server should receive the metadata required for software configuration. POLL_SERVER_CFN will allow calls to the cfn API action DescribeStackResource authenticated with the provided keypair (requires enabled heat-api-cfn). POLL_SERVER_HEAT will allow calls to the Heat API resource-show using the provided keystone credentials (requires keystone v3 API, and configured stack_user_* config options). POLL_TEMP_URL will create and populate a Swift TempURL with metadata for polling (requires object-store endpoint which supports TempURL).ZAQAR_MESSAGE will create a dedicated zaqar queue and post the metadata for polling.

default_user_data_format = HEAT_CFNTOOLS

string value

Template default for how the user_data should be formatted for the server. For HEAT_CFNTOOLS, the user_data is bundled as part of the heat-cfntools cloud-init boot configuration data. For RAW the user_data is passed to Nova unmodified. For SOFTWARE_CONFIG user_data is bundled as part of the software config data, and metadata is derived from any associated SoftwareDeployment resources.

deferred_auth_method = trusts

string value

(DEPRECATED FOR REMOVAL) Select deferred auth method, stored password or trusts.

enable_cloud_watch_lite = False

boolean value

(DEPRECATED FOR REMOVAL) Enable the legacy OS::Heat::CWLiteAlarm resource.

enable_stack_abandon = False

boolean value

Enable the preview Stack Abandon feature.

enable_stack_adopt = False

boolean value

Enable the preview Stack Adopt feature.

encrypt_parameters_and_properties = False

boolean value

Encrypt template parameters that were marked as hidden and also all the resource properties before storing them in database.

engine_life_check_timeout = 2

integer value

RPC timeout for the engine liveness check that is used for stack locking.

environment_dir = /etc/heat/environment.d

string value

The directory to search for environment files.

error_wait_time = 240

integer value

The amount of time in seconds after an error has occurred that tasks may continue to run before being cancelled.

event_purge_batch_size = 200

integer value

Controls how many events will be pruned whenever a stack’s events are purged. Set this lower to keep more events at the expense of more frequent purges.

executor_thread_pool_size = 64

integer value

Size of executor thread pool when executor is threading or eventlet.

fatal_deprecations = False

boolean value

Enables or disables fatal status of deprecations.

graceful_shutdown_timeout = 60

integer value

Specify a timeout after which a gracefully shutdown server will exit. Zero value means endless wait.

heat_metadata_server_url = None

string value

URL of the Heat metadata server. NOTE: Setting this is only needed if you require instances to use a different endpoint than in the keystone catalog

heat_stack_user_role = heat_stack_user

string value

Keystone role for heat template-defined users.

heat_waitcondition_server_url = None

string value

URL of the Heat waitcondition server.

`heat_watch_server_url = `

string value

(DEPRECATED FOR REMOVAL) URL of the Heat CloudWatch server.

hidden_stack_tags = ['data-processing-cluster']

list value

Stacks containing these tag names will be hidden. Multiple tags should be given in a comma-delimited list (eg. hidden_stack_tags=hide_me,me_too).

host = <based on operating system>

string value

Name of the engine node. This can be an opaque identifier. It is not necessarily a hostname, FQDN, or IP address.

instance_connection_https_validate_certificates = 1

string value

Instance connection to CFN/CW API validate certs if SSL is used.

instance_connection_is_secure = 0

string value

Instance connection to CFN/CW API via https.

`instance_format = [instance: %(uuid)s] `

string value

The format for an instance that is passed with the log message.

`instance_uuid_format = [instance: %(uuid)s] `

string value

The format for an instance UUID that is passed with the log message.

keystone_backend = heat.engine.clients.os.keystone.heat_keystoneclient.KsClientWrapper

string value

Fully qualified class name to use as a keystone backend.

loadbalancer_template = None

string value

Custom template for the built-in loadbalancer nested stack.

log-config-append = None

string value

The name of a logging configuration file. This file is appended to any existing logging configuration files. For details about logging configuration files, see the Python logging module documentation. Note that when logging configuration files are used then all logging configuration is set in the configuration file and other logging configuration options are ignored (for example, log-date-format).

log-date-format = %Y-%m-%d %H:%M:%S

string value

Defines the format string for %%(asctime)s in log records. Default: %(default)s . This option is ignored if log_config_append is set.

log-dir = None

string value

(Optional) The base directory used for relative log_file paths. This option is ignored if log_config_append is set.

log-file = None

string value

(Optional) Name of log file to send logging output to. If no default is set, logging will go to stderr as defined by use_stderr. This option is ignored if log_config_append is set.

log_options = True

boolean value

Enables or disables logging values of all registered options when starting a service (at DEBUG level).

log_rotate_interval = 1

integer value

The amount of time before the log files are rotated. This option is ignored unless log_rotation_type is setto "interval".

log_rotate_interval_type = days

string value

Rotation interval type. The time of the last file change (or the time when the service was started) is used when scheduling the next rotation.

log_rotation_type = none

string value

Log rotation type.

logging_context_format_string = %(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [%(request_id)s %(user_identity)s] %(instance)s%(message)s

string value

Format string to use for log messages with context. Used by oslo_log.formatters.ContextFormatter

logging_debug_format_suffix = %(funcName)s %(pathname)s:%(lineno)d

string value

Additional data to append to log message when logging level for the message is DEBUG. Used by oslo_log.formatters.ContextFormatter

logging_default_format_string = %(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [-] %(instance)s%(message)s

string value

Format string to use for log messages when context is undefined. Used by oslo_log.formatters.ContextFormatter

logging_exception_prefix = %(asctime)s.%(msecs)03d %(process)d ERROR %(name)s %(instance)s

string value

Prefix each line of exception output with this format. Used by oslo_log.formatters.ContextFormatter

logging_user_identity_format = %(user)s %(tenant)s %(domain)s %(user_domain)s %(project_domain)s

string value

Defines the format string for %(user_identity)s that is used in logging_context_format_string. Used by oslo_log.formatters.ContextFormatter

max_events_per_stack = 1000

integer value

Rough number of maximum events that will be available per stack. Actual number of events can be a bit higher since purge checks take place randomly 200/event_purge_batch_size percent of the time. Older events are deleted when events are purged. Set to 0 for unlimited events per stack.

max_interface_check_attempts = 10

integer value

Number of times to check whether an interface has been attached or detached.

max_json_body_size = 1048576

integer value

Maximum raw byte size of JSON request body. Should be larger than max_template_size.

max_logfile_count = 30

integer value

Maximum number of rotated log files.

max_logfile_size_mb = 200

integer value

Log file maximum size in MB. This option is ignored if "log_rotation_type" is not set to "size".

max_nested_stack_depth = 5

integer value

Maximum depth allowed when using nested stacks.

max_nova_api_microversion = None

floating point value

Maximum nova API version for client plugin. With this limitation, any nova feature supported with microversion number above max_nova_api_microversion will not be available.

max_resources_per_stack = 1000

integer value

Maximum resources allowed per top-level stack. -1 stands for unlimited.

max_server_name_length = 53

integer value

Maximum length of a server name to be used in nova.

max_stacks_per_tenant = 100

integer value

Maximum number of stacks any one tenant may have active at one time.

max_template_size = 524288

integer value

Maximum raw byte size of any template.

num_engine_workers = None

integer value

Number of heat-engine processes to fork and run. Will default to either to 4 or number of CPUs on the host, whichever is greater.

observe_on_update = False

boolean value

On update, enables heat to collect existing resource properties from reality and converge to updated template.

onready = None

string value

Deprecated.

periodic_interval = 60

integer value

Seconds between running periodic tasks.

plugin_dirs = ['/usr/lib64/heat', '/usr/lib/heat', '/usr/local/lib/heat', '/usr/local/lib64/heat']

list value

List of directories to search for plug-ins.

publish_errors = False

boolean value

Enables or disables publication of error events.

rate_limit_burst = 0

integer value

Maximum number of logged messages per rate_limit_interval.

rate_limit_except_level = CRITICAL

string value

Log level name used by rate limiting: CRITICAL, ERROR, INFO, WARNING, DEBUG or empty string. Logs with level greater or equal to rate_limit_except_level are not filtered. An empty string means that all levels are filtered.

rate_limit_interval = 0

integer value

Interval, number of seconds, of log rate limiting.

`reauthentication_auth_method = `

string value

Allow reauthentication on token expiry, such that long-running tasks may complete. Note this defeats the expiry of any provided user tokens.

region_name_for_services = None

string value

Default region name used to get services endpoints.

rpc_conn_pool_size = 30

integer value

Size of RPC connection pool.

rpc_response_timeout = 60

integer value

Seconds to wait for a response from a call.

run_external_periodic_tasks = True

boolean value

Some periodic tasks can be run in a separate process. Should we run them here?

`server_keystone_endpoint_type = `

string value

If set, is used to control which authentication endpoint is used by user-controlled servers to make calls back to Heat. If unset www_authenticate_uri is used.

stack_action_timeout = 3600

integer value

Timeout in seconds for stack action (ie. create or update).

stack_domain_admin = None

string value

Keystone username, a user with roles sufficient to manage users and projects in the stack_user_domain.

stack_domain_admin_password = None

string value

Keystone password for stack_domain_admin user.

stack_scheduler_hints = False

boolean value

When this feature is enabled, scheduler hints identifying the heat stack context of a server or volume resource are passed to the configured schedulers in nova and cinder, for creates done using heat resource types OS::Cinder::Volume, OS::Nova::Server, and AWS::EC2::Instance. heat_root_stack_id will be set to the id of the root stack of the resource, heat_stack_id will be set to the id of the resource’s parent stack, heat_stack_name will be set to the name of the resource’s parent stack, heat_path_in_stack will be set to a list of comma delimited strings of stackresourcename and stackname with list[0] being rootstackname, heat_resource_name will be set to the resource’s name, and heat_resource_uuid will be set to the resource’s orchestration id.

stack_user_domain_id = None

string value

Keystone domain ID which contains heat template-defined users. If this option is set, stack_user_domain_name option will be ignored.

stack_user_domain_name = None

string value

Keystone domain name which contains heat template-defined users. If stack_user_domain_id option is set, this option is ignored.

syslog-log-facility = LOG_USER

string value

Syslog facility to receive log lines. This option is ignored if log_config_append is set.

template_dir = /etc/heat/templates

string value

The directory to search for template files.

transport_url = rabbit://

string value

The network address and optional user credentials for connecting to the messaging backend, in URL format. The expected format is:

driver://[user:pass@]host:port[,[userN:passN@]hostN:portN]/virtual_host?query

Example: rabbit://rabbitmq:password@127.0.0.1:5672//

For full details on the fields in the URL see the documentation of oslo_messaging.TransportURL at https://docs.openstack.org/oslo.messaging/latest/reference/transport.html

trusts_delegated_roles = []

list value

Subset of trustor roles to be delegated to heat. If left unset, all roles of a user will be delegated to heat when creating a stack.

use-journal = False

boolean value

Enable journald for logging. If running in a systemd environment you may wish to enable journal support. Doing so will use the journal native protocol which includes structured metadata in addition to log messages.This option is ignored if log_config_append is set.

use-json = False

boolean value

Use JSON formatting for logging. This option is ignored if log_config_append is set.

use-syslog = False

boolean value

Use syslog for logging. Existing syslog format is DEPRECATED and will be changed later to honor RFC5424. This option is ignored if log_config_append is set.

use_eventlog = False

boolean value

Log output to Windows Event Log.

use_stderr = False

boolean value

Log output to standard error. This option is ignored if log_config_append is set.

watch-log-file = False

boolean value

Uses logging handler designed to watch file system. When log file is moved or removed this handler will open a new log file with specified path instantaneously. It makes sense only if log_file option is specified and Linux platform is used. This option is ignored if log_config_append is set.

4.1.2. auth_password

The following table outlines the options available under the [auth_password] group in the /etc/heat/heat.conf file.

Table 4.1. auth_password

Configuration option = Default valueTypeDescription

allowed_auth_uris = []

list value

Allowed keystone endpoints for auth_uri when multi_cloud is enabled. At least one endpoint needs to be specified.

multi_cloud = False

boolean value

Allow orchestration of multiple clouds.

4.1.3. clients

The following table outlines the options available under the [clients] group in the /etc/heat/heat.conf file.

Table 4.2. clients

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = publicURL

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = False

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.4. clients_aodh

The following table outlines the options available under the [clients_aodh] group in the /etc/heat/heat.conf file.

Table 4.3. clients_aodh

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.5. clients_barbican

The following table outlines the options available under the [clients_barbican] group in the /etc/heat/heat.conf file.

Table 4.4. clients_barbican

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.6. clients_cinder

The following table outlines the options available under the [clients_cinder] group in the /etc/heat/heat.conf file.

Table 4.5. clients_cinder

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

http_log_debug = False

boolean value

Allow client’s debug log output.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.7. clients_designate

The following table outlines the options available under the [clients_designate] group in the /etc/heat/heat.conf file.

Table 4.6. clients_designate

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.8. clients_glance

The following table outlines the options available under the [clients_glance] group in the /etc/heat/heat.conf file.

Table 4.7. clients_glance

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.9. clients_heat

The following table outlines the options available under the [clients_heat] group in the /etc/heat/heat.conf file.

Table 4.8. clients_heat

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

`url = `

string value

Optional heat url in format like http://0.0.0.0:8004/v1/%(tenant_id)s.

4.1.10. clients_keystone

The following table outlines the options available under the [clients_keystone] group in the /etc/heat/heat.conf file.

Table 4.9. clients_keystone

Configuration option = Default valueTypeDescription

`auth_uri = `

string value

Unversioned keystone url in format like http://0.0.0.0:5000.

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.11. clients_magnum

The following table outlines the options available under the [clients_magnum] group in the /etc/heat/heat.conf file.

Table 4.10. clients_magnum

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.12. clients_manila

The following table outlines the options available under the [clients_manila] group in the /etc/heat/heat.conf file.

Table 4.11. clients_manila

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.13. clients_mistral

The following table outlines the options available under the [clients_mistral] group in the /etc/heat/heat.conf file.

Table 4.12. clients_mistral

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.14. clients_monasca

The following table outlines the options available under the [clients_monasca] group in the /etc/heat/heat.conf file.

Table 4.13. clients_monasca

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.15. clients_neutron

The following table outlines the options available under the [clients_neutron] group in the /etc/heat/heat.conf file.

Table 4.14. clients_neutron

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.16. clients_nova

The following table outlines the options available under the [clients_nova] group in the /etc/heat/heat.conf file.

Table 4.15. clients_nova

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

http_log_debug = False

boolean value

Allow client’s debug log output.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.17. clients_octavia

The following table outlines the options available under the [clients_octavia] group in the /etc/heat/heat.conf file.

Table 4.16. clients_octavia

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.18. clients_sahara

The following table outlines the options available under the [clients_sahara] group in the /etc/heat/heat.conf file.

Table 4.17. clients_sahara

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.19. clients_senlin

The following table outlines the options available under the [clients_senlin] group in the /etc/heat/heat.conf file.

Table 4.18. clients_senlin

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.20. clients_swift

The following table outlines the options available under the [clients_swift] group in the /etc/heat/heat.conf file.

Table 4.19. clients_swift

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.21. clients_trove

The following table outlines the options available under the [clients_trove] group in the /etc/heat/heat.conf file.

Table 4.20. clients_trove

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.22. clients_zaqar

The following table outlines the options available under the [clients_zaqar] group in the /etc/heat/heat.conf file.

Table 4.21. clients_zaqar

Configuration option = Default valueTypeDescription

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

endpoint_type = None

string value

Type of endpoint in Identity service catalog to use for communication with the OpenStack service.

insecure = None

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

4.1.23. cors

The following table outlines the options available under the [cors] group in the /etc/heat/heat.conf file.

Table 4.22. cors

Configuration option = Default valueTypeDescription

allow_credentials = True

boolean value

Indicate that the actual request can include user credentials

allow_headers = ['X-Auth-Token', 'X-Identity-Status', 'X-Roles', 'X-Service-Catalog', 'X-User-Id', 'X-Tenant-Id', 'X-OpenStack-Request-ID']

list value

Indicate which header field names may be used during the actual request.

allow_methods = ['GET', 'PUT', 'POST', 'DELETE', 'PATCH']

list value

Indicate which methods can be used during the actual request.

allowed_origin = None

list value

Indicate whether this resource may be shared with the domain received in the requests "origin" header. Format: "<protocol>://<host>[:<port>]", no trailing slash. Example: https://horizon.example.com

expose_headers = ['X-Auth-Token', 'X-Subject-Token', 'X-Service-Token', 'X-OpenStack-Request-ID']

list value

Indicate which headers are safe to expose to the API. Defaults to HTTP Simple Headers.

max_age = 3600

integer value

Maximum cache age of CORS preflight requests.

4.1.24. database

The following table outlines the options available under the [database] group in the /etc/heat/heat.conf file.

Table 4.23. database

Configuration option = Default valueTypeDescription

backend = sqlalchemy

string value

The back end to use for the database.

connection = None

string value

The SQLAlchemy connection string to use to connect to the database.

connection_debug = 0

integer value

Verbosity of SQL debugging information: 0=None, 100=Everything.

`connection_parameters = `

string value

Optional URL parameters to append onto the connection URL at connect time; specify as param1=value1&param2=value2&…​

connection_recycle_time = 3600

integer value

Connections which have been present in the connection pool longer than this number of seconds will be replaced with a new one the next time they are checked out from the pool.

connection_trace = False

boolean value

Add Python stack traces to SQL as comment strings.

db_inc_retry_interval = True

boolean value

If True, increases the interval between retries of a database operation up to db_max_retry_interval.

db_max_retries = 20

integer value

Maximum retries in case of connection error or deadlock error before error is raised. Set to -1 to specify an infinite retry count.

db_max_retry_interval = 10

integer value

If db_inc_retry_interval is set, the maximum seconds between retries of a database operation.

db_retry_interval = 1

integer value

Seconds between retries of a database transaction.

max_overflow = 50

integer value

If set, use this value for max_overflow with SQLAlchemy.

max_pool_size = 5

integer value

Maximum number of SQL connections to keep open in a pool. Setting a value of 0 indicates no limit.

max_retries = 10

integer value

Maximum number of database connection retries during startup. Set to -1 to specify an infinite retry count.

mysql_enable_ndb = False

boolean value

If True, transparently enables support for handling MySQL Cluster (NDB).

mysql_sql_mode = TRADITIONAL

string value

The SQL mode to be used for MySQL sessions. This option, including the default, overrides any server-set SQL mode. To use whatever SQL mode is set by the server configuration, set this to no value. Example: mysql_sql_mode=

pool_timeout = None

integer value

If set, use this value for pool_timeout with SQLAlchemy.

retry_interval = 10

integer value

Interval between retries of opening a SQL connection.

slave_connection = None

string value

The SQLAlchemy connection string to use to connect to the slave database.

sqlite_synchronous = True

boolean value

If True, SQLite uses synchronous mode.

use_db_reconnect = False

boolean value

Enable the experimental use of database reconnect on connection lost.

4.1.25. ec2authtoken

The following table outlines the options available under the [ec2authtoken] group in the /etc/heat/heat.conf file.

Table 4.24. ec2authtoken

Configuration option = Default valueTypeDescription

allowed_auth_uris = []

list value

Allowed keystone endpoints for auth_uri when multi_cloud is enabled. At least one endpoint needs to be specified.

auth_uri = None

string value

Authentication Endpoint URI.

ca_file = None

string value

Optional CA cert file to use in SSL connections.

cert_file = None

string value

Optional PEM-formatted certificate chain file.

insecure = False

boolean value

If set, then the server’s certificate will not be verified.

key_file = None

string value

Optional PEM-formatted file that contains the private key.

multi_cloud = False

boolean value

Allow orchestration of multiple clouds.

4.1.26. eventlet_opts

The following table outlines the options available under the [eventlet_opts] group in the /etc/heat/heat.conf file.

Table 4.25. eventlet_opts

Configuration option = Default valueTypeDescription

client_socket_timeout = 900

integer value

Timeout for client connections' socket operations. If an incoming connection is idle for this number of seconds it will be closed. A value of 0 means wait forever.

wsgi_keep_alive = True

boolean value

If False, closes the client socket connection explicitly.

4.1.27. healthcheck

The following table outlines the options available under the [healthcheck] group in the /etc/heat/heat.conf file.

Table 4.26. healthcheck

Configuration option = Default valueTypeDescription

backends = []

list value

Additional backends that can perform health checks and report that information back as part of a request.

detailed = False

boolean value

Show more detailed information as part of the response. Security note: Enabling this option may expose sensitive details about the service being monitored. Be sure to verify that it will not violate your security policies.

disable_by_file_path = None

string value

Check the presence of a file to determine if an application is running on a port. Used by DisableByFileHealthcheck plugin.

disable_by_file_paths = []

list value

Check the presence of a file based on a port to determine if an application is running on a port. Expects a "port:path" list of strings. Used by DisableByFilesPortsHealthcheck plugin.

path = /healthcheck

string value

(DEPRECATED FOR REMOVAL) The path to respond to healtcheck requests on.

4.1.28. heat_api

The following table outlines the options available under the [heat_api] group in the /etc/heat/heat.conf file.

Table 4.27. heat_api

Configuration option = Default valueTypeDescription

backlog = 4096

integer value

Number of backlog requests to configure the socket with.

bind_host = 0.0.0.0

IP address value

Address to bind the server. Useful when selecting a particular network interface.

bind_port = 8004

port value

The port on which the server will listen.

cert_file = None

string value

Location of the SSL certificate file to use for SSL mode.

key_file = None

string value

Location of the SSL key file to use for enabling SSL mode.

max_header_line = 16384

integer value

Maximum line size of message headers to be accepted. max_header_line may need to be increased when using large tokens (typically those generated by the Keystone v3 API with big service catalogs).

tcp_keepidle = 600

integer value

The value for the socket option TCP_KEEPIDLE. This is the time in seconds that the connection must be idle before TCP starts sending keepalive probes.

workers = 0

integer value

Number of workers for Heat service. Default value 0 means, that service will start number of workers equal number of cores on server.

4.1.29. heat_api_cfn

The following table outlines the options available under the [heat_api_cfn] group in the /etc/heat/heat.conf file.

Table 4.28. heat_api_cfn

Configuration option = Default valueTypeDescription

backlog = 4096

integer value

Number of backlog requests to configure the socket with.

bind_host = 0.0.0.0

IP address value

Address to bind the server. Useful when selecting a particular network interface.

bind_port = 8000

port value

The port on which the server will listen.

cert_file = None

string value

Location of the SSL certificate file to use for SSL mode.

key_file = None

string value

Location of the SSL key file to use for enabling SSL mode.

max_header_line = 16384

integer value

Maximum line size of message headers to be accepted. max_header_line may need to be increased when using large tokens (typically those generated by the Keystone v3 API with big service catalogs).

tcp_keepidle = 600

integer value

The value for the socket option TCP_KEEPIDLE. This is the time in seconds that the connection must be idle before TCP starts sending keepalive probes.

workers = 1

integer value

Number of workers for Heat service.

4.1.30. heat_api_cloudwatch

The following table outlines the options available under the [heat_api_cloudwatch] group in the /etc/heat/heat.conf file.

Table 4.29. heat_api_cloudwatch

Configuration option = Default valueTypeDescription

backlog = 4096

integer value

(DEPRECATED FOR REMOVAL) Number of backlog requests to configure the socket with.

bind_host = 0.0.0.0

IP address value

(DEPRECATED FOR REMOVAL) Address to bind the server. Useful when selecting a particular network interface.

bind_port = 8003

port value

(DEPRECATED FOR REMOVAL) The port on which the server will listen.

cert_file = None

string value

(DEPRECATED FOR REMOVAL) Location of the SSL certificate file to use for SSL mode.

key_file = None

string value

(DEPRECATED FOR REMOVAL) Location of the SSL key file to use for enabling SSL mode.

max_header_line = 16384

integer value

(DEPRECATED FOR REMOVAL) Maximum line size of message headers to be accepted. max_header_line may need to be increased when using large tokens (typically those generated by the Keystone v3 API with big service catalogs.)

tcp_keepidle = 600

integer value

(DEPRECATED FOR REMOVAL) The value for the socket option TCP_KEEPIDLE. This is the time in seconds that the connection must be idle before TCP starts sending keepalive probes.

workers = 1

integer value

(DEPRECATED FOR REMOVAL) Number of workers for Heat service.

4.1.31. keystone_authtoken

The following table outlines the options available under the [keystone_authtoken] group in the /etc/heat/heat.conf file.

Table 4.30. keystone_authtoken

Configuration option = Default valueTypeDescription

auth_section = None

string value

Config Section from which to load plugin specific options

auth_type = None

string value

Authentication type to load

auth_uri = None

string value

(DEPRECATED FOR REMOVAL) Complete "public" Identity API endpoint. This endpoint should not be an "admin" endpoint, as it should be accessible by all end users. Unauthenticated clients are redirected to this endpoint to authenticate. Although this endpoint should ideally be unversioned, client support in the wild varies. If you’re using a versioned v2 endpoint here, then this should not be the same endpoint the service user utilizes for validating tokens, because normal end users may not be able to reach that endpoint. This option is deprecated in favor of www_authenticate_uri and will be removed in the S release.

auth_version = None

string value

API version of the Identity API endpoint.

cache = None

string value

Request environment key where the Swift cache object is stored. When auth_token middleware is deployed with a Swift cache, use this option to have the middleware share a caching backend with swift. Otherwise, use the memcached_servers option instead.

cafile = None

string value

A PEM encoded Certificate Authority to use when verifying HTTPs connections. Defaults to system CAs.

certfile = None

string value

Required if identity server requires client certificate

delay_auth_decision = False

boolean value

Do not handle authorization requests within the middleware, but delegate the authorization decision to downstream WSGI components.

enforce_token_bind = permissive

string value

Used to control the use and type of token binding. Can be set to: "disabled" to not check token binding. "permissive" (default) to validate binding information if the bind type is of a form known to the server and ignore it if not. "strict" like "permissive" but if the bind type is unknown the token will be rejected. "required" any form of token binding is needed to be allowed. Finally the name of a binding method that must be present in tokens.

http_connect_timeout = None

integer value

Request timeout value for communicating with Identity API server.

http_request_max_retries = 3

integer value

How many times are we trying to reconnect when communicating with Identity API Server.

include_service_catalog = True

boolean value

(Optional) Indicate whether to set the X-Service-Catalog header. If False, middleware will not ask for service catalog on token validation and will not set the X-Service-Catalog header.

insecure = False

boolean value

Verify HTTPS connections.

interface = admin

string value

Interface to use for the Identity API endpoint. Valid values are "public", "internal" or "admin"(default).

keyfile = None

string value

Required if identity server requires client certificate

memcache_pool_conn_get_timeout = 10

integer value

(Optional) Number of seconds that an operation will wait to get a memcached client connection from the pool.

memcache_pool_dead_retry = 300

integer value

(Optional) Number of seconds memcached server is considered dead before it is tried again.

memcache_pool_maxsize = 10

integer value

(Optional) Maximum total number of open connections to every memcached server.

memcache_pool_socket_timeout = 3

integer value

(Optional) Socket timeout in seconds for communicating with a memcached server.

memcache_pool_unused_timeout = 60

integer value

(Optional) Number of seconds a connection to memcached is held unused in the pool before it is closed.

memcache_secret_key = None

string value

(Optional, mandatory if memcache_security_strategy is defined) This string is used for key derivation.

memcache_security_strategy = None

string value

(Optional) If defined, indicate whether token data should be authenticated or authenticated and encrypted. If MAC, token data is authenticated (with HMAC) in the cache. If ENCRYPT, token data is encrypted and authenticated in the cache. If the value is not one of these options or empty, auth_token will raise an exception on initialization.

memcache_use_advanced_pool = False

boolean value

(Optional) Use the advanced (eventlet safe) memcached client pool. The advanced pool will only work under python 2.x.

memcached_servers = None

list value

Optionally specify a list of memcached server(s) to use for caching. If left undefined, tokens will instead be cached in-process.

region_name = None

string value

The region in which the identity server can be found.

service_token_roles = ['service']

list value

A choice of roles that must be present in a service token. Service tokens are allowed to request that an expired token can be used and so this check should tightly control that only actual services should be sending this token. Roles here are applied as an ANY check so any role in this list must be present. For backwards compatibility reasons this currently only affects the allow_expired check.

service_token_roles_required = False

boolean value

For backwards compatibility reasons we must let valid service tokens pass that don’t pass the service_token_roles check as valid. Setting this true will become the default in a future release and should be enabled if possible.

service_type = None

string value

The name or type of the service as it appears in the service catalog. This is used to validate tokens that have restricted access rules.

token_cache_time = 300

integer value

In order to prevent excessive effort spent validating tokens, the middleware caches previously-seen tokens for a configurable duration (in seconds). Set to -1 to disable caching completely.

www_authenticate_uri = None

string value

Complete "public" Identity API endpoint. This endpoint should not be an "admin" endpoint, as it should be accessible by all end users. Unauthenticated clients are redirected to this endpoint to authenticate. Although this endpoint should ideally be unversioned, client support in the wild varies. If you’re using a versioned v2 endpoint here, then this should not be the same endpoint the service user utilizes for validating tokens, because normal end users may not be able to reach that endpoint.

4.1.32. noauth

The following table outlines the options available under the [noauth] group in the /etc/heat/heat.conf file.

Table 4.31. noauth

Configuration option = Default valueTypeDescription

`token_response = `

string value

JSON file containing the content returned by the noauth middleware.

4.1.33. oslo_messaging_amqp

The following table outlines the options available under the [oslo_messaging_amqp] group in the /etc/heat/heat.conf file.

Table 4.32. oslo_messaging_amqp

Configuration option = Default valueTypeDescription

addressing_mode = dynamic

string value

Indicates the addressing mode used by the driver. Permitted values: legacy - use legacy non-routable addressing routable - use routable addresses dynamic - use legacy addresses if the message bus does not support routing otherwise use routable addressing

anycast_address = anycast

string value

Appended to the address prefix when sending to a group of consumers. Used by the message bus to identify messages that should be delivered in a round-robin fashion across consumers.

broadcast_prefix = broadcast

string value

address prefix used when broadcasting to all servers

connection_retry_backoff = 2

integer value

Increase the connection_retry_interval by this many seconds after each unsuccessful failover attempt.

connection_retry_interval = 1

integer value

Seconds to pause before attempting to re-connect.

connection_retry_interval_max = 30

integer value

Maximum limit for connection_retry_interval + connection_retry_backoff

container_name = None

string value

Name for the AMQP container. must be globally unique. Defaults to a generated UUID

default_notification_exchange = None

string value

Exchange name used in notification addresses. Exchange name resolution precedence: Target.exchange if set else default_notification_exchange if set else control_exchange if set else notify

default_notify_timeout = 30

integer value

The deadline for a sent notification message delivery. Only used when caller does not provide a timeout expiry.

default_reply_retry = 0

integer value

The maximum number of attempts to re-send a reply message which failed due to a recoverable error.

default_reply_timeout = 30

integer value

The deadline for an rpc reply message delivery.

default_rpc_exchange = None

string value

Exchange name used in RPC addresses. Exchange name resolution precedence: Target.exchange if set else default_rpc_exchange if set else control_exchange if set else rpc

default_send_timeout = 30

integer value

The deadline for an rpc cast or call message delivery. Only used when caller does not provide a timeout expiry.

default_sender_link_timeout = 600

integer value

The duration to schedule a purge of idle sender links. Detach link after expiry.

group_request_prefix = unicast

string value

address prefix when sending to any server in group

idle_timeout = 0

integer value

Timeout for inactive connections (in seconds)

link_retry_delay = 10

integer value

Time to pause between re-connecting an AMQP 1.0 link that failed due to a recoverable error.

multicast_address = multicast

string value

Appended to the address prefix when sending a fanout message. Used by the message bus to identify fanout messages.

notify_address_prefix = openstack.org/om/notify

string value

Address prefix for all generated Notification addresses

notify_server_credit = 100

integer value

Window size for incoming Notification messages

pre_settled = ['rpc-cast', 'rpc-reply']

multi valued

Send messages of this type pre-settled. Pre-settled messages will not receive acknowledgement from the peer. Note well: pre-settled messages may be silently discarded if the delivery fails. Permitted values: rpc-call - send RPC Calls pre-settled rpc-reply- send RPC Replies pre-settled rpc-cast - Send RPC Casts pre-settled notify - Send Notifications pre-settled

pseudo_vhost = True

boolean value

Enable virtual host support for those message buses that do not natively support virtual hosting (such as qpidd). When set to true the virtual host name will be added to all message bus addresses, effectively creating a private subnet per virtual host. Set to False if the message bus supports virtual hosting using the hostname field in the AMQP 1.0 Open performative as the name of the virtual host.

reply_link_credit = 200

integer value

Window size for incoming RPC Reply messages.

rpc_address_prefix = openstack.org/om/rpc

string value

Address prefix for all generated RPC addresses

rpc_server_credit = 100

integer value

Window size for incoming RPC Request messages

`sasl_config_dir = `

string value

Path to directory that contains the SASL configuration

`sasl_config_name = `

string value

Name of configuration file (without .conf suffix)

`sasl_default_realm = `

string value

SASL realm to use if no realm present in username

`sasl_mechanisms = `

string value

Space separated list of acceptable SASL mechanisms

server_request_prefix = exclusive

string value

address prefix used when sending to a specific server

ssl = False

boolean value

Attempt to connect via SSL. If no other ssl-related parameters are given, it will use the system’s CA-bundle to verify the server’s certificate.

`ssl_ca_file = `

string value

CA certificate PEM file used to verify the server’s certificate

`ssl_cert_file = `

string value

Self-identifying certificate PEM file for client authentication

`ssl_key_file = `

string value

Private key PEM file used to sign ssl_cert_file certificate (optional)

ssl_key_password = None

string value

Password for decrypting ssl_key_file (if encrypted)

ssl_verify_vhost = False

boolean value

By default SSL checks that the name in the server’s certificate matches the hostname in the transport_url. In some configurations it may be preferable to use the virtual hostname instead, for example if the server uses the Server Name Indication TLS extension (rfc6066) to provide a certificate per virtual host. Set ssl_verify_vhost to True if the server’s SSL certificate uses the virtual host name instead of the DNS name.

trace = False

boolean value

Debug: dump AMQP frames to stdout

unicast_address = unicast

string value

Appended to the address prefix when sending to a particular RPC/Notification server. Used by the message bus to identify messages sent to a single destination.

4.1.34. oslo_messaging_kafka

The following table outlines the options available under the [oslo_messaging_kafka] group in the /etc/heat/heat.conf file.

Table 4.33. oslo_messaging_kafka

Configuration option = Default valueTypeDescription

compression_codec = none

string value

The compression codec for all data generated by the producer. If not set, compression will not be used. Note that the allowed values of this depend on the kafka version

conn_pool_min_size = 2

integer value

(DEPRECATED FOR REMOVAL) The pool size limit for connections expiration policy

conn_pool_ttl = 1200

integer value

(DEPRECATED FOR REMOVAL) The time-to-live in sec of idle connections in the pool

consumer_group = oslo_messaging_consumer

string value

Group id for Kafka consumer. Consumers in one group will coordinate message consumption

enable_auto_commit = False

boolean value

Enable asynchronous consumer commits

kafka_consumer_timeout = 1.0

floating point value

Default timeout(s) for Kafka consumers

kafka_max_fetch_bytes = 1048576

integer value

Max fetch bytes of Kafka consumer

max_poll_records = 500

integer value

The maximum number of records returned in a poll call

pool_size = 10

integer value

(DEPRECATED FOR REMOVAL) Pool Size for Kafka Consumers

producer_batch_size = 16384

integer value

Size of batch for the producer async send

producer_batch_timeout = 0.0

floating point value

Upper bound on the delay for KafkaProducer batching in seconds

sasl_mechanism = PLAIN

string value

Mechanism when security protocol is SASL

security_protocol = PLAINTEXT

string value

Protocol used to communicate with brokers

`ssl_cafile = `

string value

CA certificate PEM file used to verify the server certificate

4.1.35. oslo_messaging_notifications

The following table outlines the options available under the [oslo_messaging_notifications] group in the /etc/heat/heat.conf file.

Table 4.34. oslo_messaging_notifications

Configuration option = Default valueTypeDescription

driver = []

multi valued

The Drivers(s) to handle sending notifications. Possible values are messaging, messagingv2, routing, log, test, noop

retry = -1

integer value

The maximum number of attempts to re-send a notification message which failed to be delivered due to a recoverable error. 0 - No retry, -1 - indefinite

topics = ['notifications']

list value

AMQP topic used for OpenStack notifications.

transport_url = None

string value

A URL representing the messaging driver to use for notifications. If not set, we fall back to the same configuration used for RPC.

4.1.36. oslo_messaging_rabbit

The following table outlines the options available under the [oslo_messaging_rabbit] group in the /etc/heat/heat.conf file.

Table 4.35. oslo_messaging_rabbit

Configuration option = Default valueTypeDescription

amqp_auto_delete = False

boolean value

Auto-delete queues in AMQP.

amqp_durable_queues = False

boolean value

Use durable queues in AMQP.

direct_mandatory_flag = True

integer value

Enable/Disable the RabbitMQ mandatory flag for direct send. The direct send is used as reply,so the MessageUndeliverable exception is raised in case the client queue does not exist.

heartbeat_in_pthread = False

boolean value

EXPERIMENTAL: Run the health check heartbeat threadthrough a native python thread. By default if thisoption isn’t provided the health check heartbeat willinherit the execution model from the parent process. Byexample if the parent process have monkey patched thestdlib by using eventlet/greenlet then the heartbeatwill be run through a green thread.

heartbeat_rate = 2

integer value

How often times during the heartbeat_timeout_threshold we check the heartbeat.

heartbeat_timeout_threshold = 60

integer value

Number of seconds after which the Rabbit broker is considered down if heartbeat’s keep-alive fails (0 disables heartbeat).

kombu_compression = None

string value

EXPERIMENTAL: Possible values are: gzip, bz2. If not set compression will not be used. This option may not be available in future versions.

kombu_failover_strategy = round-robin

string value

Determines how the next RabbitMQ node is chosen in case the one we are currently connected to becomes unavailable. Takes effect only if more than one RabbitMQ node is provided in config.

kombu_missing_consumer_retry_timeout = 60

integer value

How long to wait a missing client before abandoning to send it its replies. This value should not be longer than rpc_response_timeout.

kombu_reconnect_delay = 1.0

floating point value

How long to wait before reconnecting in response to an AMQP consumer cancel notification.

rabbit_ha_queues = False

boolean value

Try to use HA queues in RabbitMQ (x-ha-policy: all). If you change this option, you must wipe the RabbitMQ database. In RabbitMQ 3.0, queue mirroring is no longer controlled by the x-ha-policy argument when declaring a queue. If you just want to make sure that all queues (except those with auto-generated names) are mirrored across all nodes, run: "rabbitmqctl set_policy HA ^(?!amq\.).* {"ha-mode": "all"} "

rabbit_interval_max = 30

integer value

Maximum interval of RabbitMQ connection retries. Default is 30 seconds.

rabbit_login_method = AMQPLAIN

string value

The RabbitMQ login method.

rabbit_qos_prefetch_count = 0

integer value

Specifies the number of messages to prefetch. Setting to zero allows unlimited messages.

rabbit_retry_backoff = 2

integer value

How long to backoff for between retries when connecting to RabbitMQ.

rabbit_retry_interval = 1

integer value

How frequently to retry connecting with RabbitMQ.

rabbit_transient_queues_ttl = 1800

integer value

Positive integer representing duration in seconds for queue TTL (x-expires). Queues which are unused for the duration of the TTL are automatically deleted. The parameter affects only reply and fanout queues.

ssl = False

boolean value

Connect over SSL.

`ssl_ca_file = `

string value

SSL certification authority file (valid only if SSL enabled).

`ssl_cert_file = `

string value

SSL cert file (valid only if SSL enabled).

`ssl_key_file = `

string value

SSL key file (valid only if SSL enabled).

`ssl_version = `

string value

SSL version to use (valid only if SSL enabled). Valid values are TLSv1 and SSLv23. SSLv2, SSLv3, TLSv1_1, and TLSv1_2 may be available on some distributions.

4.1.37. oslo_middleware

The following table outlines the options available under the [oslo_middleware] group in the /etc/heat/heat.conf file.

Table 4.36. oslo_middleware

Configuration option = Default valueTypeDescription

enable_proxy_headers_parsing = False

boolean value

Whether the application is behind a proxy or not. This determines if the middleware should parse the headers or not.

max_request_body_size = 114688

integer value

The maximum body size for each request, in bytes.

secure_proxy_ssl_header = X-Forwarded-Proto

string value

(DEPRECATED FOR REMOVAL) The HTTP Header that will be used to determine what the original request protocol scheme was, even if it was hidden by a SSL termination proxy.

4.1.38. oslo_policy

The following table outlines the options available under the [oslo_policy] group in the /etc/heat/heat.conf file.

Table 4.37. oslo_policy

Configuration option = Default valueTypeDescription

enforce_scope = False

boolean value

This option controls whether or not to enforce scope when evaluating policies. If True, the scope of the token used in the request is compared to the scope_types of the policy being enforced. If the scopes do not match, an InvalidScope exception will be raised. If False, a message will be logged informing operators that policies are being invoked with mismatching scope.

policy_default_rule = default

string value

Default rule. Enforced when a requested rule is not found.

policy_dirs = ['policy.d']

multi valued

Directories where policy configuration files are stored. They can be relative to any directory in the search path defined by the config_dir option, or absolute paths. The file defined by policy_file must exist for these directories to be searched. Missing or empty directories are ignored.

policy_file = policy.json

string value

The relative or absolute path of a file that maps roles to permissions for a given service. Relative paths must be specified in relation to the configuration file setting this option.

remote_content_type = application/x-www-form-urlencoded

string value

Content Type to send and receive data for REST based policy check

remote_ssl_ca_crt_file = None

string value

Absolute path to ca cert file for REST based policy check

remote_ssl_client_crt_file = None

string value

Absolute path to client cert for REST based policy check

remote_ssl_client_key_file = None

string value

Absolute path client key file REST based policy check

remote_ssl_verify_server_crt = False

boolean value

server identity verification for REST based policy check

4.1.39. paste_deploy

The following table outlines the options available under the [paste_deploy] group in the /etc/heat/heat.conf file.

Table 4.38. paste_deploy

Configuration option = Default valueTypeDescription

api_paste_config = api-paste.ini

string value

The API paste config file to use.

flavor = None

string value

The flavor to use.

4.1.40. profiler

The following table outlines the options available under the [profiler] group in the /etc/heat/heat.conf file.

Table 4.39. profiler

Configuration option = Default valueTypeDescription

connection_string = messaging://

string value

Connection string for a notifier backend.

Default value is messaging:// which sets the notifier to oslo_messaging.

Examples of possible values:

  • messaging:// - use oslo_messaging driver for sending spans.
  • redis://127.0.0.1:6379 - use redis driver for sending spans.
  • mongodb://127.0.0.1:27017 - use mongodb driver for sending spans.
  • elasticsearch://127.0.0.1:9200 - use elasticsearch driver for sending spans.
  • jaeger://127.0.0.1:6831 - use jaeger tracing as driver for sending spans.

enabled = False

boolean value

Enable the profiling for all services on this node.

Default value is False (fully disable the profiling feature).

Possible values:

  • True: Enables the feature
  • False: Disables the feature. The profiling cannot be started via this project operations. If the profiling is triggered by another project, this project part will be empty.

es_doc_type = notification

string value

Document type for notification indexing in elasticsearch.

es_scroll_size = 10000

integer value

Elasticsearch splits large requests in batches. This parameter defines maximum size of each batch (for example: es_scroll_size=10000).

es_scroll_time = 2m

string value

This parameter is a time value parameter (for example: es_scroll_time=2m), indicating for how long the nodes that participate in the search will maintain relevant resources in order to continue and support it.

filter_error_trace = False

boolean value

Enable filter traces that contain error/exception to a separated place.

Default value is set to False.

Possible values:

  • True: Enable filter traces that contain error/exception.
  • False: Disable the filter.

hmac_keys = SECRET_KEY

string value

Secret key(s) to use for encrypting context data for performance profiling.

This string value should have the following format: <key1>[,<key2>,…​<keyn>], where each key is some random string. A user who triggers the profiling via the REST API has to set one of these keys in the headers of the REST API call to include profiling results of this node for this particular project.

Both "enabled" flag and "hmac_keys" config options should be set to enable profiling. Also, to generate correct profiling information across all services at least one key needs to be consistent between OpenStack projects. This ensures it can be used from client side to generate the trace, containing information from all possible resources.

sentinel_service_name = mymaster

string value

Redissentinel uses a service name to identify a master redis service. This parameter defines the name (for example: sentinal_service_name=mymaster).

socket_timeout = 0.1

floating point value

Redissentinel provides a timeout option on the connections. This parameter defines that timeout (for example: socket_timeout=0.1).

trace_sqlalchemy = False

boolean value

Enable SQL requests profiling in services.

Default value is False (SQL requests won’t be traced).

Possible values:

  • True: Enables SQL requests profiling. Each SQL query will be part of the trace and can the be analyzed by how much time was spent for that.
  • False: Disables SQL requests profiling. The spent time is only shown on a higher level of operations. Single SQL queries cannot be analyzed this way.

4.1.41. revision

The following table outlines the options available under the [revision] group in the /etc/heat/heat.conf file.

Table 4.40. revision

Configuration option = Default valueTypeDescription

heat_revision = unknown

string value

Heat build revision. If you would prefer to manage your build revision separately, you can move this section to a different file and add it as another config option.

4.1.42. ssl

The following table outlines the options available under the [ssl] group in the /etc/heat/heat.conf file.

Table 4.41. ssl

Configuration option = Default valueTypeDescription

ca_file = None

string value

CA certificate file to use to verify connecting clients.

cert_file = None

string value

Certificate file to use when starting the server securely.

ciphers = None

string value

Sets the list of available ciphers. value should be a string in the OpenSSL cipher list format.

key_file = None

string value

Private key file to use when starting the server securely.

version = None

string value

SSL version to use (valid only if SSL enabled). Valid values are TLSv1 and SSLv23. SSLv2, SSLv3, TLSv1_1, and TLSv1_2 may be available on some distributions.

4.1.43. trustee

The following table outlines the options available under the [trustee] group in the /etc/heat/heat.conf file.

Table 4.42. trustee

Configuration option = Default valueTypeDescription

auth-url = None

string value

Authentication URL

auth_section = None

string value

Config Section from which to load plugin specific options

auth_type = None

string value

Authentication type to load

default-domain-id = None

string value

Optional domain ID to use with v3 and v2 parameters. It will be used for both the user and project domain in v3 and ignored in v2 authentication.

default-domain-name = None

string value

Optional domain name to use with v3 API and v2 parameters. It will be used for both the user and project domain in v3 and ignored in v2 authentication.

domain-id = None

string value

Domain ID to scope to

domain-name = None

string value

Domain name to scope to

password = None

string value

User’s password

project-domain-id = None

string value

Domain ID containing project

project-domain-name = None

string value

Domain name containing project

project-id = None

string value

Project ID to scope to

project-name = None

string value

Project name to scope to

system-scope = None

string value

Scope for system operations

trust-id = None

string value

Trust ID

user-domain-id = None

string value

User’s domain id

user-domain-name = None

string value

User’s domain name

user-id = None

string value

User id

username = None

string value

Username

4.1.44. volumes

The following table outlines the options available under the [volumes] group in the /etc/heat/heat.conf file.

Table 4.43. volumes

Configuration option = Default valueTypeDescription

backups_enabled = True

boolean value

Indicate if cinder-backup service is enabled. This is a temporary workaround until cinder-backup service becomes discoverable, see LP#1334856.